I have an order in for a Model S 90D with free supercharging and ventilated seats due to be delivered in March. I am considering an upgrade to an inventory 2016 P100D identical to my 90D order. What are you thoughts? Background: I have always wanted a Model S since the day I first say one. I live in Los Angeles the land of thousands of Model Ss. In 2014 I started my research looking at the Model S when Autopilot hadn't even come out yet but the hardware was an option. I finally settled on an M3 and March of 2015 I ordered my M3 which was delivered July 1st 2015. I ordered it because it was amazing bang for my buck and I got $4000 of MSRP on a custom order. The deal was too good to pass up. All the while I had my M3 I thought about my Tesla. When I got the memo that unlimited free supercharging was going to be no longer I put my M3 on swapalease.com and within a day I had it assumed and on January 15th I gave my M3 to it's new owner. I own a 2016 GMC Sierra 2500 Denali which I am driving full time until I get my Tesla. I intend to purchase and finance my Model S at 2% for 72 months. My Order: I ordered December 26th a 90D with every option except the rear facing seats and dual chargers. It came out to $116,700 (with the delivery fee from what I remember and a $1000 off from a referral code). The specs are in my signature. The car is due to be delivered early March. My Problem: The problem I face is two fold, both are very first world problems. 1.) The first is that I have a philosophy which is that when purchasing or leasing a vehicle just go for the best. You'll never have a regret or look back if you got the best that was available at the time. When I purchased my 2008 Ford F250 Lariat I added aftermarket nav, sat radio, sound system, aux switches, the list goes on and in hind sight I should have just bought the truck loaded which is what I did when I bought my GMC 8 years later. 2.) I am impatient and want my car now. (so this rules out the 100D cause I am not waiting longer for the car) Pros and Cons: 90D - Pros: Great range, "fair price," plenty fast (though I haven't driven one but I imagine it's fast). Cons: Can't think of any except to say the 100D came out and I'm annoyed but given problem number two it eliminates it. P100D Pros: Aligns with my philosophy and is readily available, has better range, maintains free unlimited supercharging and ventilated seats Cons: The price makes me want to gag. I mean really $40,000 more! I could buy 66% of a 60D. The depreciation is staggering (from what I can tell). Does not corner or brake any better than a 90D or even a 60D (according to my sales guy) Thoughts: I live 1 mile from a supercharger in Burbank so unlimited supercharging would be awesome cause I frequent the Trader Joe's across the street and there a full super market and Starbucks next door. I am leaning toward keeping my 90D for two reasons. It's probably a more sensible amount of money. It will likely meet my needs. But I can't get that P100D out of my mind. With Tesla releasing new stuff every quarter will I feel my 90D will feel like a dinosaur too soon. (ie the 100D). Also, with Telsa releasing new stuff every quarter I fear that P100D will depreciate incredibly fast and just based on that I will be flushing money down the toilet. I mean I can keep the $40,000 and when I feel like my 90D is a dinosaur go get a new Model S. But really my intention is to buy the car and keep it for 8 years and get rid of it the a month before that battery warranty runs out. So I feel like if I spend the huge huge huge bucks and get the P100D I'll be set for 8 years but at an inordinate sum. I mean for that money I could buy a Prius (base model) every year for 8 years. I think I know my answer but it would be nice to hear other's thoughts. Why go P? Once you go P do you every go back? HELP!